Question

The scores of a certain population on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed, with mean $\mu$ and standard deviation $\sigma = 10$. A simple random sample of 25 children from this population is taken and each is given the WISC. The mean of the 25 scores is $\bar{x} = 104.32$. Based on these data, a 95% confidence interval for $\mu$ is: O $104.32 \pm 0.78$. O $104.32 \pm 3.29$. O $104.32 \pm 3.92$. O $104.32 \pm 19.6$.

Name: the scores of a certain population on the wechsler intelligence scale for children wisc are thought to be normally distributed with mean mu and standard deviation sigma 10 a simple random sa 24386
Uploaded: 2023-09-24T23:19:36-08:00
Duration: 1 min 8 s
Channel: Ivan Kochetkov
Description: the scores of a certain population on the wechsler intelligence scale for children wisc are thought to be normally distributed with mean mu and standard deviation sigma 10 a simple random sa 24386

          The scores of a certain population on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed, with mean $\mu$ and standard deviation $\sigma = 10$. A simple random sample of 25 children from this population is taken and each is given the WISC. The mean of the 25 scores is $\bar{x} = 104.32$. Based on these data, a 95% confidence interval for $\mu$ is:
O $104.32 \pm 0.78$.
O $104.32 \pm 3.29$.
O $104.32 \pm 3.92$.
O $104.32 \pm 19.6$.

the scores of a certain population on the wechsler intelligence scale for children wisc are thought to be normally distributed with mean mu and standard deviation sigma 10 a simple random sa 24386

Added by Sofia K.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Ivan Kochetkov

09/24/2023

Step 1

Sample size, $n = 25$. Sample mean, $\bar{x} = 104.32$. Confidence level = 95%. Show more…

Show all steps

Thanks for your feedback!

The scores of a certain population on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed, with mean $\mu$ and standard deviation $\sigma = 10$. A simple random sample of 25 children from this population is taken and each is given the WISC. The mean of the 25 scores is $\bar{x} = 104.32$. Based on these data, a 95% confidence interval for $\mu$ is: O $104.32 \pm 0.78$. O $104.32 \pm 3.29$. O $104.32 \pm 3.92$. O $104.32 \pm 19.6$.